US2906646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food preserving wrapping material and process of preparing the same
Assignee: Milprint Inc
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Filing: 1954-02-15
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Granted: 1959-09-29
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Expires: 1974-02-15
Abstract
No abstract record available.
Inventors
- 👤 Donald P Smith
- 👤 Rollin Joseph Norbert
- 👤 Albert L James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; B65D81/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31801; Y10T428/31804
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
THE METHOD OF MANUFACTURING A FUNGISTATIC WRAPPING SHEET WHICH CONSISTS IN FIRST APPLYING A THERMOPLASTIC COATING OF WAX AND RUBBER COMPOSITION TO A REGENERATED CELLULOSE SHEET, THEN APPLYING TO THE SAID THERMOPLASTIC COATING A SLURRY-SOLUTION CONSISTING OF AN ALCOHOL CONTAINING NOT MORE THAN 3 CARBON ATOMS PER MOLECULE AS A VEHICLE CARRYING FINE PARTICLES OF SORBIC ACID SUSPENDED THEREIN AND SORBIC ACID IN SATURATED SOLUTION THEREIN WITH A SMALL AMOUNT OF BONDING AGENT IN SOLUTION THEREIN, AND THEN REMOVING SAID ALCOHOL BY EVAPORATION TO PRECIPITATE DISSOLVED SORBIC ACID AND SAID DISSOLVED BONDING AGENT TO FORM A BOND BETWEEN THE THERMOPLASTIC COATING AND THE DISPERSED SORBIC ACID PARTICLES TO HOLD THE LATTER ON SAID THERMOPLASTIC SURFACE IN AN EXPOSED AND FUNGISTATICALLY EFFECTIVE POSITION.
References Cited (Backward Citations)
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Cited
US2379294A
Cited
GB591820A
Cited
US2480010A
Cited
US2574526A
Cited
US2724650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |